21252356

素因数分解:

$2^2\times {\mathrm{37}}^2\times {\mathrm{3881}}^1$

素因数の和:3959

約数の個数: 18

約数和(自身を含む): 38233818

約数和(自身を除く): 16981462

約数列:

[1, 2, 4, 37, 74, 148, 1369, 2738, 3881, 5476, 7762, 15524, 143597, 287194, 574388, 5313089, 10626178, 21252356]

約数ペア:

[(1, 21252356), (2, 10626178), (4, 5313089), (37, 574388), (74, 287194), (148, 143597), (1369, 15524), (2738, 7762), (3881, 5476)]